Related Clues:

• Ivan the terrible meets the German who crosses the border
• One entering as an enemy
• Martian, in some stories
• Norman was once at odds with Harold
• Eponymous Dennis character with poor sense of direction?
• I name Skywalker's enemy attacker
• Attacker within, against a duke and monarch
• One illegally entering wood lacks time to seize state
• Attacker from outside
• One entering by force
• Attacker, one unfortunately driven out
• Person who enters by force
• Encroacher
• Person making hostile takeover has driven frantically around area
• Popular Star Wars character's after alien attacker